How to reduce time of execution?

Question

class Program {
static void Main () {
int number = int.Parse (Console.ReadLine ());
int S = 0, A = 0, P = 0, V = 0;

for (int i = 0; i < number; i++) {
V++;
if (V == 4)
{
V = 0;
P++;

if (P == 4)
{
P = 0;
A++;
if (A == 3)
{
A = 0;
S++;
}
}

}
}
Console.WriteLine ("{0} {1} {2} {3}", S, A, P, V);
}

Answer 1

you can remove the "A++;" and "P++;" parts and just modify the if statements to be "if(++P == 4)" and "if(++A == 3)" to make the code shorter too

Answer 2

I have already got it!

My solution

class Program {
static void Main () {
int number = int.Parse (Console.ReadLine ());
int S = 0, A = 0, P = 0, V = number % 4;
number = (number - V) / 4;
while (number != 0) {
P++;
if (P == 4) {
P = 0;
A++;
if (A == 3) {
A = 0;
S++;
}
}

number--;
}
Console.WriteLine ("{0} {1} {2} {3}", S, A, P, V);
}
}